Christmas tree top smoke alarm



FIG. 1 is a front elevational view of the Christmas tree top smoke alarm showing our new design;

FIG. 2 is a rear elevational view thereof, with the cord broken away to indicate indeterminate length and with the broken line showing for illustrative purposes only and forming no part of the claimed design;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a Christmas tree top smoke alarm, as shown and described. 